Driving mechanism for ore-concentrators.



E. DEISTER. DRIVING MECHANISM FDR 01m GONGENTRATORS.

APPLICATION FILED 11:15.9, 1906.

Patented Jan. 12,1909

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M4, INVENTOR ATTORNEY UNITED STATESMPATENT OFFICE.

EMIL DEIS'IER, OF FORT WAYNE, INDIANA, ASSIGNUR TO THE DEISTER. CONCENTRATOR COMPANY, A CORPORATION OF lNlJlANA.

DRIVING IIIECHANIBM FOR ORE-CONCENTRATORS.

Specification of Letters Patent.

Patented Jan. 12, 1909.

Application filed March 9, 1906. Serial No. 305,042.

10 all whom it may concern:

Be it known that I, Emu. I)EISTER, citizen of the United States of America, and resident of Fort Wayne, in the county of Allen find State of Indiana, have invented certain new and useful Improvements in Driving Mechanism for ()re Conc-entrators, of which the following is a specification.

This invention relates to improvements in driving mechanism for ore-concentrators and the object is to provide mechanism for imparting rapid ditl'erential reciprocating motion to concentrating tables and similar devices, and to so construct the mechanism as to preserve the unity of action between the mechanism and table while running at normal or accelerated speeds, and thereby secure a constant quality of motion for the table.

The above object is accomplished by the construction illustrated in the accompanying drawings in Which Figure 1 is an elevation of the driving mechanism arranged in relation with the concentrating table, parts appearing broken away and in section; Fig. 2 is a detail show" ing a part of the table. in section and the connection of the driving rod therewith; Fig. 3 is a transverse section of the adjusting collar threaded sleeve, and driving rod, showing detent mechanism in connection therewith; and Fig. 4 is a detail of the driving head, shown partially in vertical central section.

Similar numerals of reference indicate corresponding parts througiniut the several views, and referring now to the same: 1 is a supporting standard mounted on a base timher 2, and having journaled in its upper end a crank shaft 3. A rocking lever 4 is mounted at its lower end upon a shaft 5 which is carried by pendent lugs 6 secured to the under side of the timber 2. The lever has a drivlng head 7 and an extending actuatin arm 8 the outer end 9 of which is bifurcatei and provided with a series of seats 10 upon its upper face coincident with said bifurcated end. A pitman 11 is mounted in connection with thecrank shaft-3 to be actuated thereby, and has near its lower end a' cross head 12 which is adapted to rest in anyof the several seats 10 on the arm. The lower end of the nitman extends between the bifurcated end of the arm 8 and has moun d thereon a Washer 13, spring 1;4,and jamnuts 15, the Washer resting against the faces 16 beneath the seats 10 because of the action of the spring l4. 'lhc jam-nuts are adjusted so that the cross head 1; ll! be held in place in connect ion with the seats 10 by a proper stress of the spring H. Thus it will appear that, the connection between the pilman and arm 8 is flexible to an extent to prevent binding when the unlchinc is in n10- tion.

The driving rod 17 extends through the head 7 and has mounted upon its extruding end a butler consisting of a plate 118 which is threaded in connection with the driving rod and is held in adjusted position thereon by a jam-nut 19, and to the plate 18 is so cured a cushion 20 of rubber which is faced on both sides by hard leather disks 21 to pre vent the cushion from wearing. The cushion and leather disks are attached to the plate 18 by means of bolts 22, and are inter posed between the plate 18 and the adjacent face of the head 7.

Upon the driving rod, at a point upon the opposite side of the head respecting the butter, is a fixed threaded sleeve "33 upon which is mounted an adjusting collar 24, and a checlcspring 25 is interposed between the. driving head 7 and the adjacent end of the sleeve 23. An adjusting spring Qt}, of larger diameter than the former spring and extending thcreover, acts against the driving head 7 and the adjacent face of the ad justing collar '24. Both of said springs tend to hold the butter into contact with the opposite face of the head 7. The coils of the check spring 25 are so spaced that when the spring is completely compressed so its coils contact with one another the amount of longitudinal play, afforded the driving rod by the complete compression of this spring will amount to less than thelength of stroke of the driving head. I

'It will be understood that when the spring 25 is completely compressed it will afford a positive stop "for the movement of the driving rod lengthwise in the head 7. A pendent' lug27 is attached to the under side of the table 28, and the driving rod 17 extends throu h said lug and has mounted thereon a sti spring 29 which acts against one side of thelug 27. Jam-nuts 30 on the driving rod act against the h1g2? on the'sidc thereof opposite the spring 29, and another set of jam-nuts 31 on the driving rod act against the spring 29 to hold the same compressed against saul lug. The purpose of the spring 29 is to take up lost motion between the driving rod and table and atflie same time permit slight swinging motion of the rod 17. The driving rod has mounted thereon a pipe 32 which extends from the sleeve 23 to a point near its connection with the table and serc'lves to prevent vibration of the driving to The adjusting collar 24 has radial pins 33 by which the same ma be turned upon the sleeve and has also internal longitudinal grooves 34 which are adapted to become engaged by a ball 35 contained in an opening 36 made in the sleeve 23 and driving rod. A spring 37 acts against the ball 35 to hold the same against the inner surface of the collar 24. lhe object of the spring pressed ball and the grooves 34 is to hold the collar in adjusted position upon the sleeve.

In the operation of this invention the crank shaft 3 is rotated continuously by the belt-wheel 38, and the lever 4 will oscillate upon the shaft 5 because of its connection with the crank shaft. As the head 7 moves toward the table, the driving rod 17 will become moved through the medium of the s irings 25 and 26 in the same direction with the head, and as the head is reversed in motion it will strike against the butter and hence carry the rod 17 in the corresponding direction, and it will appear that the table will becom moved accordingly with the action of the driving rod. The difi'erential motion imparted to the table is due to the yielding of the springs 25 and 26 and the succeeding impact of the head against the buffer, and the degree of diflerential action will vary inversely with the stress of the adjusting sprin 26 against the head. The stress of the spring 26 should be sufficient to cause the table to move in harmony with the action of the head at normal speed. but if the table should tcnd to lag because of variation of its load, or if the speed of thedrivinghead should become suddenl accelerated because of variation of speed o the source of power, the synchronical relation of the head 7 and table will be preserved by the check spring 25 whi h becomes completely compressed at such times and prevents the head from etting out of step with the motion of the ta )le.

Having described my invention, What I claim as new and desire to secure by Letters Patent is:

1. In a device of the clas; described, a movable table; a reciprocating driving hcad; a driving rod attached to the table and extending through the head; a butler in connection with the driving rod and acting against the adjacent face of the head; a check s )ring in connection with the driving rod ant acting against the head on the side thereof opposite the butter; and an adjusting spring extending over the check spring having adjustable relation with the driving rod and acting against said head coincidently j with the check spring; and meansto adjust I the check spring. the said check sprin being l adapted to aii'ord a positive stop or the driving rod when it is completely compressed.

2. In mechanism of the class described, a movable table; an oscillating levcr having means in connection therewith to actuate the l same and having also a driving head; a 1 driving rod attached to the table and extending loosely through the head; an adjustable buifcr secured to the rod adjacent l one side of the head; an open coil check i spring in connection with the driving rod and acting against the other side of the head and tending to hold the buffer against said l head; and means to adjust the check spring, l the said spring being adapted to act as a lpositive stop for the driving rod when its coils are completely compressed.

3. In apparatus of the class described, a l movable table; an oscillating lever having j means in connection therewith to actuate the same, and having also a driving head; a j driving rod secured to the table and extending loosely through the head, and having a f threaded sleeve fixed thereon; a butter secured to the rod and acting against the head upon the side thereof opposite the sleeve; :1 check spring interposed between the head and the adjacent end of the sleeve; an ad justing collar in connection with the sleeve; and an adjusting spring interposed between the head and the adjacent end of the collar, the said check spring bein adapted to afl ford a positive stop for the driving rod when completely compressed.

In testimony whereof I altix my signatu e, in presence of two witnesses.

EMIL DEISTER,

Witnesses:

M. MET'ILl-Ilt, W. G. Beans. 

